Printing machine



FIG. 1 is a front, top, perspective view of a printing machine showing my design;

FIG. 2 is a rear, top, perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

CLAIM The ornamental design for a printing machine, as shown and described. 